DE69026768D1 - Optical disc substrate - Google Patents

Optical disc substrate

Info

Publication number
DE69026768D1
DE69026768D1 DE69026768T DE69026768T DE69026768D1 DE 69026768 D1 DE69026768 D1 DE 69026768D1 DE 69026768 T DE69026768 T DE 69026768T DE 69026768 T DE69026768 T DE 69026768T DE 69026768 D1 DE69026768 D1 DE 69026768D1
Authority
DE
Germany
Prior art keywords
optical disc
disc substrate
substrate
optical
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69026768T
Other languages
German (de)
Other versions
DE69026768T2 (en
Inventor
Yoshinori Suga
Eiji Tanaka
Satoshi Kato
Kaoru Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Publication of DE69026768D1 publication Critical patent/DE69026768D1/en
Application granted granted Critical
Publication of DE69026768T2 publication Critical patent/DE69026768T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31511—Of epoxy ether
DE69026768T 1989-07-28 1990-07-27 Optical disc substrate Expired - Fee Related DE69026768T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19596189 1989-07-28

Publications (2)

Publication Number Publication Date
DE69026768D1 true DE69026768D1 (en) 1996-06-05
DE69026768T2 DE69026768T2 (en) 1996-09-19

Family

ID=16349867

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69026768T Expired - Fee Related DE69026768T2 (en) 1989-07-28 1990-07-27 Optical disc substrate

Country Status (5)

Country Link
US (1) US5073427A (en)
EP (1) EP0410468B1 (en)
JP (1) JPH03130943A (en)
CA (1) CA2022027A1 (en)
DE (1) DE69026768T2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1272203A (en) * 1997-09-29 2000-11-01 陶氏化学公司 Improved adhesion of amorphous saturated hydrocarbon thermoplastic substrates
DE69836194T2 (en) * 1997-12-24 2007-02-01 Fuji Photo Film Co., Ltd., Minami-Ashigara Medium for optical information storage
US6030680A (en) * 1998-09-04 2000-02-29 The Dow Chemical Company Adhesion of amorphous saturated hydrocarbon thermoplastic substrates
DE19921943A1 (en) * 1999-05-12 2000-11-16 Bayer Ag Substrate for optical data storage, based on homo-, co- and/or block polymers of vinylcyclohexane, and has specified moment of inertia and specific density
EP1212753B1 (en) * 1999-08-27 2006-10-25 Dow Global Technologies Inc. High data density optical media discs
JP4496394B2 (en) * 2004-03-31 2010-07-07 日本ゼオン株式会社 Weatherproof lens or prism

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877030A (en) * 1981-10-31 1983-05-10 Hitachi Maxell Ltd Magnetic recording medium and production thereof
NL8300422A (en) * 1983-02-04 1984-09-03 Philips Nv METHOD OF MANUFACTURING AN OPTICALLY READABLE INFORMATION DISC.
JPS60147392A (en) * 1984-01-13 1985-08-03 Nippon Telegr & Teleph Corp <Ntt> Optical information recording medium
JPS60168708A (en) * 1984-02-03 1985-09-02 Mitsui Petrochem Ind Ltd Novel random copolymer and its production
JPH07114030B2 (en) * 1986-08-11 1995-12-06 三菱化学株式会社 Optical disk substrate
JP2720030B2 (en) * 1987-05-30 1998-02-25 京セラ株式会社 Magneto-optical recording element and manufacturing method thereof
JP2586575B2 (en) * 1988-05-23 1997-03-05 三菱化学株式会社 Optical disk substrate
JP2668945B2 (en) * 1988-06-17 1997-10-27 三菱化学株式会社 optical disk
JP2681489B2 (en) * 1988-07-04 1997-11-26 ティーディーケイ株式会社 Stamper surface treatment method

Also Published As

Publication number Publication date
US5073427A (en) 1991-12-17
JPH03130943A (en) 1991-06-04
CA2022027A1 (en) 1991-01-29
EP0410468A2 (en) 1991-01-30
EP0410468B1 (en) 1996-05-01
EP0410468A3 (en) 1992-08-05
DE69026768T2 (en) 1996-09-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee